Docker-Compose Gitlab / Postgresql wont start / database permission denied after copy of instance - ruby-on-rails

Question

To test upgrade on my docker container i copied it in the docker-compose.yml. I also copied the docker files an changed conf in the gitlab.rb file. I changed domain and port as follows:
### OLD CONF
gitlab:
image: gitlab/gitlab-ce:14.9.0-ce.0
depends_on:
- nginx-proxy
- nginx-proxy-letsencrypt
restart: always
volumes:
- './gitlab/config:/etc/gitlab'
- './gitlab/logs:/var/log/gitlab'
- './gitlab/data:/var/opt/gitlab'
# volumes:
# - ./gitlab:/etc/gitlab
# - ./gitlab/backups:/var/opt/gitlab/backups
# - ./gitlab/ssh:/etc/ssh
# - ./gitlab/git-data:/var/opt/gitlab/git-data
ports:
- "10296:22"
environment:
GITLAB_OMNIBUS_CONFIG: |
external_url 'https://gitlab.mysite.biz'
# letsencrypt
letsencrypt['enabled'] = false
# email
gitlab_rails['gitlab_email_enabled'] = true
gitlab_rails['gitlab_email_from'] = ''
gitlab_rails['gitlab_email_display_name'] = 'Gitlab'
gitlab_rails['gitlab_email_reply_to'] = 'admin#mysite.de'
# backups
gitlab_rails['backup_keep_time'] = 604800 # 7 days
gitlab_rails['backup_upload_connection'] = {
:provider => 'Local',
:local_root => '/backup'
}
gitlab_rails['backup_upload_remote_directory'] = '.'
# ssh
gitlab_rails['gitlab_shell_ssh_port'] = 10296
# mailserver
gitlab_rails['smtp_enable'] = true
gitlab_rails['smtp_address'] = "mail.mysite.de"
gitlab_rails['smtp_port'] = 587
gitlab_rails['smtp_user_name'] = "admin#mysite.de"
gitlab_rails['smtp_password'] = "1234"
gitlab_rails['smtp_domain'] = "mysite.de"
gitlab_rails['smtp_authentication'] = "plain"
gitlab_rails['smtp_enable_starttls_auto'] = true
gitlab_rails['smtp_tls'] = false
gitlab_rails['gitlab_email_from'] = 'admin#mysite.de'
gitlab_rails['gitlab_email_reply_to'] = 'admin#mysite.de'
VIRTUAL_HOST: gitlab.mysite.biz
LETSENCRYPT_HOST: gitlab.mysite.biz
container_name: gitlab
logging:
options:
max-size: "100m"
max-file: "2"
### NEW CONF
gitlab-new:
image: gitlab/gitlab-ce:14.9.0-ce.0
depends_on:
- nginx-proxy
- nginx-proxy-letsencrypt
restart: always
volumes:
- './gitlab-new/config:/etc/gitlab'
- './gitlab-new/logs:/var/log/gitlab'
- './gitlab-new/data:/var/opt/gitlab'
ports:
- "10297:22"
environment:
GITLAB_SKIP_UNMIGRATED_DATA_CHECK: 'true'
GITLAB_OMNIBUS_CONFIG: |
external_url 'https://gitlab-new.mysite.biz'
# letsencrypt
letsencrypt['enabled'] = false
# email
gitlab_rails['gitlab_email_enabled'] = true
gitlab_rails['gitlab_email_from'] = ''
gitlab_rails['gitlab_email_display_name'] = 'Gitlab'
gitlab_rails['gitlab_email_reply_to'] = 'admin#mysite.de'
# backups
gitlab_rails['backup_keep_time'] = 604800 # 7 days
gitlab_rails['backup_upload_connection'] = {
:provider => 'Local',
:local_root => '/backup'
}
gitlab_rails['backup_upload_remote_directory'] = '.'
# ssh
gitlab_rails['gitlab_shell_ssh_port'] = 10297
# mailserver
gitlab_rails['smtp_enable'] = true
gitlab_rails['smtp_address'] = "mail.mysite.de"
gitlab_rails['smtp_port'] = 587
gitlab_rails['smtp_user_name'] = "admin#mysite.de"
gitlab_rails['smtp_password'] = "1234"
gitlab_rails['smtp_domain'] = "mysite.de"
gitlab_rails['smtp_authentication'] = "plain"
gitlab_rails['smtp_enable_starttls_auto'] = true
gitlab_rails['smtp_tls'] = false
gitlab_rails['gitlab_email_from'] = 'admin#mysite.de'
gitlab_rails['gitlab_email_reply_to'] = 'admin#mysite.de'
VIRTUAL_HOST: gitlab-new.mysite.biz
LETSENCRYPT_HOST: gitlab-new.mysite.biz
container_name: gitlab-new
logging:
options:
max-size: "100m"
max-file: "2"
At fist running of "docker-compose up gitlab-new" the problem was that the folder opt/gitlab/embedded/service/gitlab-rails/log/ hadn't the right permissions on all log files. With chmod 0666 i solved this, but now i have the problem that my database postgresql wont start.
The log:
2023-02-17T10:56:28.663Z: Cached record for ApplicationSetting couldn't be loaded, falling back to uncached record: could not connect to server: Permission denied
Is the server running locally and accepting
connections on Unix domain socket "/var/opt/gitlab/postgresql/.s.PGSQL.5432"?
When i try to start postgresql it stays down with no message
Where at least can i find out more detailled information why the postgresql wont start? I cant find logs regarding this.
Also what could be the reason? you now know i tried to copy the same instance for keeping the data, could this be the reason and if yes, why?